Leo I - The youngest Milky Way dwarf spheroidal galaxy?

Details Leo I - The youngest Milky Way dwarf spheroidal galaxy? Leo I - The youngest Milky Way dwarf spheroidal galaxy?

Oct 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993aj....106.1420l&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 106, no. 4, p. 1420-1435.

Other

100

Color-Magnitude Diagram, Dwarf Galaxies, Galactic Structure, Globular Clusters, Stellar Color, Astronomical Photometry, Carbon Stars, Galactic Mass, Metallicity, Star Distribution

Scientific paper

Deep CCD photometry of about 16,000 stars in the Milky Way's Leo I spheroidal galaxy satellite is reported. An account is given of the features observed in the color-magnitude diagrams (CMDs) derived therefrom. A very blue and well-defined red giant branch (RGB) is noted. The CMDs of Leo I shows about 50 anomalous Cepheid candidates; there are another 50 or so asymptotic giant branch stars above the tip of the RGB, including 15 known carbon stars. The mean color of the RGB is estimated at MI = -3.5 mag.

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